LUBRICATING OIL COMPOSITIONS CONTAINING ETHYLENE-ALPHA OLIFIN POLYMERS OF CONTROLLED SEQUENCE DISTRIBUTION AND MOLECULAR HETEROGENEITY

摘要

Ethylene-alpha-olefin copolymers are disclosed being particularly useful as improving the low temperature viscosity and pumpability properties of lubricating oil comprised of a major and minor component each of which have a defined ethylene sequence distribution with respect to the number of ethylenes in sequences of three or more and the percent of ethylene sequences of three or more ethylene units. Ethylene-propylene copolymers are the preferred embodiment.